Breast buffer for shoe heels



BREAST BUFFER FOR SHOE HEELS Filed. April 1'7, 1934 I Patented July 9 1935 UNITED s ATEs BREAST BUFFER Fon snonnnnns Piaoentino Lauretti, Carlisle, assignor of. onehalf to Charles A. Wardecker, Carlisle, 1%.:

Application April 17, 19 34,; saa1 No. 72'1,o4sf

This invention relates to buffers used in shoe machinery and particularly to a buffer particu: larly, designed for sandpaperingor buffing the breasts of relatively long Continental or Louis heels used on turned, Compo, McKay and Sabicca shoes.

Because of the height of such heels, their angle to the sole of the shoe and the high insteps of such shoes, the breasts of such heels, particularly at the junction of the shank, have been heretofore sandpapered by hand as no power operated buffer has been heretofore so designed and mounted as to do this work. Bufiing wheels have not been made or designed for this purpose and all buffing wheels known. to me at present in use, if attempted to be used .for this purpose, will touch and mar the shank ofthe shoe adjacent its junction with the, sole. Sandpapering the breast of the heel by hand is relatively slow work and this means expense, adding materially to the cost of making or repairing such shoes and heels.

The general object of this invention, therefore, is to provide a power-operated buffer for this purpose which is so constructed and so mounted that the buffer will engage the breast of the heel adjacent the shank of the shoe without touching and marring the face of the shank. 1

A further objectis to so construct the'buifer that the margin thereof shall be not only laterally flexible, but circumferentially flexible and which is so constructed that a sheet of sandpaper formed in the proper manner shall be detachably held in place on the buffer in such fashion that it may be readily removed and'replaced. Still another object isto so mount the buffing wheel that it may be readily adjusted in the most convenient angle and position for the workman and to provide a bearing for the buffing wheel which will reduce friction. Q

Still another object is to provide improved means for buffing or sand apering the shank and the face of the heel beyond its junction with the shank. d d Other objects will appear in the course of the following description. f s

. My. invention. is. illustrated in the drawing ,whereinzi Fig. l is a fragmentary perspective view of a portion of a support orhead having my improved buffer mounted thereon; v p f r Fig. 2 isa front elevation of themounting for the 'bufiqng' wheelpartly inv section, the buffing .wheel itself and its bearing being in section; 1

. Fig. 3 is a fragmentary section on the line 3-3 of Fig. 2;

split 1 I.

Fig. 4 is a fragmentary vertical sectional view of a preferred form of my bufiing wheel;

Figure 5is an inside face view of the rubber core of the buffing wheel;

- Fig. 6 is a fragment of a modified rubber core;

Fig. [is afragmentary elevation partly in section of the buffing means for the breast of the heel and for the shank.

Referring to Figures 1 to 3, A designates a supporting arm carryingupon it the shaft B, this shaft in turn carrying upon it the pulley C over which the belt D passes and this shaft also carries upon it the pulley E. The arm A is forked at a and disposed between this fork and the pulley E and surrounding the bearing for the shaft is a clamp I!) split at I I, the clamp being held upon the hearing at any desired angle by tightening up on the screw [2 which engages through the The extremity of the clamp is reduced in thickness at l3.. l4 designates a tubular sleeve which at its upper end has an offset portion l5 cut away to accommodate the portion I3 of the clamp, overlapping the same and held in angularly adjusted relation upon this clamp by means of the screw it. It will thus be seen that the clamp maybe adjusted outward and the pulley E may be adjusted outward on the shaft to any desired extent and held in its adjusted position by tightening on the screw. 52 while the tubular sleeve M may be held in any desired angularly adjusted position by thescrew l6.

Disposed within the tubular sleeve is a post H, the lower end of which terminates in a head l8 through which passes a fixed shaftupon which are mounted the freely rotatable pulleys l9, one on each end of the shaft'held in plaoeby the screws 29,. Means 2! are provided for oiling this shaft.

The head I8 is provided with an extension 22 disposed at an angle to the post I'l, this extension being formed with an annular terminal end '23 which is countersunk for the reception of a bushing 24 of brass or like material, the bushing being provided at its upper end with a flange fitting within the countersink. Adapted to extend through this bushing is 'a pin 25 having a head 26 at itsupper end adapted to rest upon the flanged end of the bushing and within the countersink in the terminal portion 33. The upper end' of the terminal portion 23 is closed by a thin metalliccap 21' which is angled at 28 so as to fit against the end of the head 22 and be held thereto by a screw 29. The end of the pin 25 is counterbored andinteriorly screw-threaded. One side of the pin is flattened at 30 and mounted upon this pin is a pulley 3| whose inner face is countersunk to receive the annular terminal portion 23 and fit loosely thereover, this pulley being held to the pin 25 by means of the set screw 32 which bears against the flattened portion 36 of the pin.

Carried upon the pin 25 is the buffer. This consists of an annular plate 33 reduced in thickness around the central portion of its inner face and fitting upon this reduced inner margin of the member 23 is an annular rubber core 34 shown in Figure 5, the margin of this core being radially slitted at uniform distances at 35. This rubber core is held to the member 23 by means of screws 36 or like elements. The member 33 is preferably of metal and is recessed at its center for the reception of the head 31 of the screw 38. Adapted to be placed over the face of the plate 33 and brought around over the beveled edge of the rubber core 34 is a sheet of sandpaper designated 39, the margin of which is cut to form a plurality of radial tongues as is usual and wellknown, the tongues being designated 46. .This sheet is disposed against the face of the member 33, the margin of the central opening in the sheet being engaged by the head 3'! of screw 38 and the inwardly extending tongues 40 are folded over against the inner face of the rubber core 34 and held in place by a clamping plate 4| through the center of which the screw 38 passes, the screw 38 engaging in the recess in the end of the shaft 25 as shown most clearly in Figure 2. The pulley 3| on the shaft 25 is driven, of course, by a belt 42 which passes around the pulley 3| under the pulleys l9 and around the pulley E.

In Figure 6, I show a variant form of the core 34 and have designated this variant form as 34 This is also of rubber but instead of the periphery of the core being radially slitted as at 35, the core is formed on its periphery with a plurality of V- shaped slits 35 I do not wish to be limited, however, to a rubber core whichis slitted on its margin either as shown in Figure or as shown in Figure 6 as the rubber core might be unslitted on its margin. By the use of these three cores, the operator can secure a buffer having any desired flexibility on its margin so that the pad or core may be either flexible or stiff as the operator prefers.

By reference to Figure 1, it will be seen that the buffing wheel is of such form and supported at such an angle that the breast of the shoe heel particularly at its junction with the shank can be buffed without touching the shank and any point remote from the heel. One reason for this is that the sandpaper is brought over on the inside face of the margin of the bufiing wheel so that it is this margin which bears against the breast of the heel. Another reason is that the buffing Wheel is relatively sharp-edged and can work, therefore, closely into the joint between the heel and the adjacent portion of the shank and because of the flexibility of the margin of the buffing wheel it can be forced into the corner between the shank and the breast of the heel. The attachment may be adjusted to suit the workman by adjusting the clamp ID on the bushing of the shaft, adjusting the sleeve I4 laterally upon the pivot knuckle l3 and around the screw I6 and by adjusting the posts I! within the sleeve l4 either around the axis of the post or vertically. These various adjustments permit the workman to dispose of the wheel at the exact angle and in the exact position where he can best do his work and to suit his own individual requirements. The bearing for the shaft 25 has this advantage that it may be readily oiled by removing the dust cap 21 and that it will not get overheated. The particular formation of the buiiing wheel is such that the sandpaper may be readily replaced or renewed, and the margin of the buffing wheel is flexible both laterally of the plane of the wheel and circumferentially thereof.

In Figure 4 I have shown another form of my invention which I have found to be particularly effective. The construction of the parts 16, I 4, l1, I8, l9 and 22 is the same as heretofore described but the detailed construction of the buffing wheel and its mounting upon the extension 22 is somewhat different from that shown in Figure 2. The terminal end 23 of the member 22, as shown in Figure 4, is provided with an opening for the reception of the screw-threaded end 40 of a bearing 4| having a head 42.

Mounted upon the bearing 4! is a pulley 43,

this pulley rotating upon the bearing. The

screw-threads of the portion 40 are left hand screw-threads. The pulley 43 at its outer end is formed with a recess 44 and the head of the bearing 4! fits in this recess or countersink. The exterior of the outer wall of the pulley is screwthreaded at 45.

The bufiing wheel comprises the inner member or plate 46 and the outer member or plate 41. The inner plate 46 is formed with a central hub 48 interiorly screw-threaded to engage the exterior threads 45 on the pulley. The center of the hub is counter-sunk and passing through this countersink is a screw 49 which extends through the central elevated portion 50 of plate 46 and extends into the plate 47. Disposed between the plates 46 and 41 and held clamped thereto is the core 34 as previously described, this core being held to the plate 41 by means of screws 5| as previously described for the structure shown in Figure 2.

The use and operation of the structure shown in Figure 4 is precisely the same as described for the structure shown in Figure 2 but the structure shown in Figure 4 has certain advantages over that shown in Figure 2 in that for one thing a better bearing is secured and one that will not wear out as easily and furthermore the pull on the pulley is immediately over the bearing instead of to one side of the bearing as shown in Figure 2. Furthermore, there is no screw passing through the outer plate and into the bearing pin 26 as shown in Figure 2 and the sandpaper 39 is not held in place by the head of the screw 38 as shown in Figure 2 but extends smoothly over the plate 56, the inner tongued edge of the sandpaper being clamped between the plates 41 and 48. The rubber core 34 may have the form as shown either in Figures 5 or 6.

In Figure '7 I have shown a buffer which is preferably used in conjunction with the buffing wheel. This buffer is mounted upon the shaft F and may be driven by the pulley C or by a separate pulley. It extends laterally from the shaft upon which the pulley E is mounted and this form of buffer generally speaking is commonly found in this position on shoe working machinery. The buffer ordinarily consists of a.cy1indrical core of metal, a cylindrical covering of felt over this core, the felt and the core being split, the end of the felt extending slightly beyond the metal core and over this felt is wrapped a piece of sandpaper held in place by a rubber band. The felt projects beyond the metal core and the sandpaper projects slightly beyond the felt so as to secure flexibility at the extremity of the sandpaper. This construction, however, is disadvantageous in that the sandpaper after a very short period of use being constantly forced inward at its tip by bearing against the shoe is liable to crush and break and split off so that the sandpaper lasts but a short time and must be quite constantly renewed.

My improvement consists of mounting upon the split metal core 52 a covering member 53 preferably of leather. The core and its cover 53 are split at 54. The leather member 53 at its extremity projects beyond the extremity of the core 52 and the extremity of this covering member 53 is longitudinally slitted at a plurality of points so as to provide longitudinally extending flexible tongues 55 ofleather. The sandpaper 56 has one end inserted in the slit 54 of the core and covering member and is then wrapped around the cover member andheld wrapped around by a rubber band, the extremity of the sandpaper extending over the tongues 55. The shaft F with its buffing cylinder rotates at a very high speed so that these tongues55 are urged outward by centrifugal force and though the end of the sandpaper may be forced inward, in bearing against the face of the part being sandpapered, yet as soon as the pressure is taken off, the centrifugal force of these tongues tends to force the sandpaper out again and yieldingly hold it in the form of a cylinder. Furthermore, the centrifugal force exerted by these tongues gives a yielding quality to the extremity of the buffer which, I find to be particularly effective.

It will be seen that by having this buffing cylinder on the same shaft or a shaft in alinement with the shaft upon which the pulley E is mounted that the workmen can pass the shoe from the bufling wheel immediately to the bufling cylinder, both of these parts being used for operating onadjacent parts of the shoe.

1. A heel breast bufiing attachment including a clamp adapted to be disposed around a shaft bushing, a tubular member having a knuckle pivotally adjustable upon the clamp for swinging movement parallel to the shaft around which the clamp passes, a post rotatably and longitudinally adjustable'within the tubular member and having a head at its lower end, a shaft extending through the head and carrying two pulleys on opposite sides of the head, the head at its lower end having a bearing disposed at right angles to the pulley shaft, a shaft carried by the bearing and having a pulley, a buffing wheelcarried by the shaft, the wheel having a thin edge and an abrading sheet extending over the front of the wheel around the edge thereof and over on the inside face of the wheel, and means for clamping the abrading sheet in place.

2. In a heel breast buffing attachment, a depending member having an angular head, the lower end of the head having a countersunk opening constituting a bearing, a bearing bushing disposed within the opening and having a flange engaging in said countersink, a shaft having a head extending through the bushing, the head resting on top of the bushing, a dust cap disposed over the bearing and holding the head in place, a pulley mounted upon the shaft, the lower end of the shaft having an interiorly screw-threaded bore, and a bufiing wheel including a core, a clamping plate and a screw passing through the core, clamping plate and into the end of the shaft,

and a sheet of abrading material disposed against the outer plate, extending around the periphery of the core and over the inside face thereof and beneath the clamping plate.

3. A buffing wheel for buffing heel breasts including a shaft having a pulley thereon and having a screw-threaded bore, an annular core of rubber, a metallic member engaging over the outer face of the core, the core being recessed to receive the metallic member and being attached thereto, a screw passing through the center of the metallic member and through the core and into the shaft, an annular clamping plate through which the screw passes, and bearing against the inside face of the rubber core, and a sheet of abrading material disposed over the face' of the buffing wheel and around the edge face of the core on to the inside face thereof and held in place by the clamping member, the screw having a head engaging the center of the abrading sheets.

4. A buffing wheel for heel breast buffers having a rubber core, the margin of the rubber being radially slitted and said margin being tapered radially, metallic plates bearing against opposite faces of the core, a screw passing through said metallic plates and holding them together, and a sheet of abrading material extending over the outer, metallic plate and over the margin of the rubber core around the periphery of said core and inward upon the inner face of the core and held in place by the inner metallic plate.

5. In a heel breast bufiing attachment, a supporting member, a bearing pin having threaded engagement in the member and having a head, a pulley on the pin countersunk to receive said head, the exterior of the outer wall of the pulley being exteriorly screw-threaded, an inner clamping plate having an exteriorly screw-threaded head adapted to engage over the threaded end of the pulley, an outer clamping plate, an annular rubber core adapted to support a sheet of abrasive material, the core being disposed between the outer and inner plates and projecting beyond the plates, and a headed screw extending through the plates and holding them in clamping engagement with each other, the inner plate being countersunk to receive the head of the screw.

' 6. A buffing wheel having a solid relatively thin annular rubber core, means supporting the central portion of said core, the margin of the rubber core being beveled to a relatively thin edge and said margin being radially slitted, and means for clamping a sheet of abrading material over said core.

PIACENTINO LAURETTI. 

